Priming device



June 17, 1930. R. H. THRASHER PRiMINe DEVICE Filed Aug. 22, 1928 0ATTORNEY? Patented June 17, 1930 PATENT FFICE RAY H. THRASHEB, FFERNDALE, MICHIGAN PRIMING DEVICE Application filed. August 22, 1928.

My invention relates to a new and useful improvement in a primingoperating mechanism and has for its object the provision of a devicewhereby the priming of a gasoline engine may be effected by operatingthe ordinary accelerator.

Another object of the invention is the pro vision of a mechanism foroperating the throttle of a gas engine and so connecting to the chokethat upon an operation of the throttle to fully opened position thechoke will be operated to effect a priming of the engine.

Another object of the invention is the provision of a device of thiskind which will be simple in structure, economical of manufacture andhighly efficient in use.

Other objects will appear hereinafter. The invention consists in thecombination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanyingdrawings which form a part of this specification and in which Fig. 1 isa side elevational view of the invention applied.

Fig. 2 is a perspective view of a link used in the invention.

Fig. 3 is a view taken on line 33 of Fig. 1.

The invention is illustrated as applied to a carburetor of a gasolineengine, having a throttle valve mounted on the shaft 7 and operated bythe arm 9. An engagement lug 10 serves to engage the adjusting screw 11.

An abutment block 12 limits the movement of the throttle to openposition upon a pressing forwardly of the rod 13. A choke valve isfixedly mounted on the shaft 14 and operated through the connectionswith the rod 15 and the link 16, the spring 17 serving normally toretain the choke valve in closed position. The link 16 is pivotallyconnected at one end to the arm 9 and the rod 13 is connected pivotallyto the link 16 intermediate the ends thereof.

The operation is such that when the accelerator is used for operatingthe throttle the arms 9 and 9 will rock to move the Serial No. 301,287.

throttle valve to open or closed position and the bellcrank 14: will notbe disturbed. When the arm 9 engages the engagement block 12 a furtherthrusting movement on the rod 13 will cause the bellcrank 14 to rockbecause of the movement in the link 16 into the various positions shownin dotted line 51, thus choking the engine and effecting priming. Inthis way I have provided a mechanism whereby the priming of the enginemay be effected by the accelerator, thus eliminating the secondarycontrol rod which is customarily used for operating the choke valve.

While I have illustrated and described the preferred form of myinvention I do not wish to limit myself to the precise details ofstructure shown, but desire to avail myself of such variations andmodifications as come within the scope of the appended claims.

Having thus described my invention, What I claim as new and desire tosecure by Letters Patent is:

1. In combination with an internal combustion engine having a throttlecontrol valve; a choke valve; an arm for operating each of said valves;and an abutment for limiting the operation of said throttle controlvalve; a link pivotally connected at one end to the throttle controlvalve operating arm; a rod connecting the opposite end of said link tothe choke valve operating arm; and an actuating rod pivotally connectedto said link intermediate its ends.

2. In combination with an internal combustion engine having a throttlecontrol valve, a choke valve and a separate arm for operating each ofsaid valves; means connecting to the throttle control valve arm foreffecting operation of said throttle control valve upon movement througha predetermined distance; and means connecting said connecting means tothe choke valve operating arm for operating said choke valve subsequentto the operation of said. control valve beyond a predetermined distance.

In testimony whereof I have signed the foregoing specification.

RAY H. THRASHER.

